A content silo is a group of related pages built around one main topic and connected through internal links. This guide was updated on. A complete silo usually includes five parts: a main topic, a pillar page, supporting pages, internal links and a relevant conversion page.

A well-built silo helps visitors find related information and helps search engines understand how your pages fit together. Google recommends logical site structures, relevant internal links, descriptive anchor text and crawlable links to every important page.

Content Silo Structure at a Glance

Silo Element Purpose Example
Silo topic Defines the main subject area Technical SEO
Pillar page Covers the subject broadly Technical SEO Guide
Supporting pages Answer narrower related queries Crawl Budget, Robots.txt, XML Sitemaps
Internal links Show relationships between pages "Learn how crawl budget works"
Conversion page Moves visitors toward an action Technical SEO Audit Service

A content silo is an information architecture and internal linking method. It does not guarantee rankings. The pages still need useful content, accurate information, search intent alignment and a technically accessible website.

What Is a Content Silo in SEO?

A content silo is a group of closely related pages arranged around a central topic.

For example:

Technical SEO
├── Technical SEO Guide
├── Technical SEO Audit
├── Crawl Budget
├── Robots.txt
├── XML Sitemaps
└── Canonical Tags

The central page is usually called the pillar page, hub page or parent page. The narrower pages are supporting or cluster pages.

A typical structure works like this:

  • The pillar page introduces the main topic.
  • Supporting pages explain specific subtopics.
  • Supporting pages link back to the pillar page.
  • Related supporting pages link to one another when the connection helps the reader.
  • Commercial pages receive relevant links from informational pages.

Some marketers call this a topic cluster or hub-and-spoke content model. A strict silo keeps topics separate, while a modern silo allows links between silos when those links are useful.

How to Create a Content Silo Step by Step

1. Choose Main Topics That Matter to Your Business

Start with your products, services, categories or areas of expertise.

For a company selling project management software, possible silos include:

  • Project management
  • Task management
  • Team collaboration
  • Project reporting
  • Resource planning

Choose topics that meet at least one of these conditions:

  • They represent an important product or service.
  • They have meaningful search demand.
  • They match recurring problems for your audience.
  • They support a commercial or business objective.
  • Your company has enough expertise to produce useful content.

Do not create a silo only because a keyword tool shows several related phrases. The topic should represent a meaningful subject area, not a collection of minor keyword variations.

2. Assign One Primary Search Intent to Each Pillar Page

Each pillar page should have one clear purpose.

Search Intent Suitable Page
Learn the subject Complete guide
Compare options Comparison page
Solve a problem How-to guide
Find a service Service page
Choose a product Commercial landing page
Find a definition Concise explanatory page

For example, technical SEO may suit a broad guide. Technical SEO audit service requires a commercial service page.

A silo can include guides, category pages, product pages, comparison pages, case studies and service pages. Do not force every page into a blog format.

3. Build a Topic Map Before Publishing

List the subtopics that support the main topic. Each page should answer a distinct question or serve a distinct intent.

Example silo for technical SEO:

Page Type Target Topic Primary Purpose
Pillar page Technical SEO Explain the complete subject
Supporting page Technical SEO audit Explain how to audit a website
Supporting page Crawl budget Explain crawling efficiency
Supporting page Robots.txt Explain crawler access rules
Supporting page XML sitemap Explain URL discovery
Supporting page Canonical tags Explain duplicate URL management
Commercial page Technical SEO services Generate enquiries

Before creating a page, ask:

  1. Does this topic deserve its own URL?
  2. Does it have a different search intent from existing pages?
  3. Can it provide information that another page cannot cover properly?
  4. Will it support a business objective?
  5. Is it specific enough to avoid overlapping with another URL?

If two pages target the same intent and would contain much of the same information, combine them or give each page a clearly different purpose.

4. Create the Pillar Page

The pillar page should provide a useful overview. It does not need to answer every subtopic in full.

A strong pillar page usually includes:

  • A direct definition of the main subject
  • The main benefits or use cases
  • The most important subtopics
  • Links to detailed supporting pages
  • Practical examples
  • Relevant products, services or next steps

For example, a Technical SEO Guide could cover crawling, indexing, site architecture, structured data and performance at a high level. It could then link to detailed pages about robots.txt, canonical tags and XML sitemaps.

The pillar page should be useful on its own. It should not be a thin directory made up of links.

5. Create Supporting Pages for Distinct Subtopics

Each supporting page should focus on one narrow topic and satisfy a specific user need.

A page about robots.txt could cover:

  • What robots.txt does
  • What robots.txt cannot do
  • Common directives
  • How to test the file
  • Typical implementation mistakes
  • When to use noindex instead

Avoid creating several pages that repeat the same explanation with minor keyword changes. That creates overlap and makes it harder to determine which URL should rank.

A supporting page should link back to the pillar page when the broader subject would help the reader. It should also link to related supporting pages when the relationship is direct.

6. Design the Internal Linking System

Internal links make the relationships between pages clear to visitors and search engines.

A basic structure looks like this:

Pillar page
   ↓
Supporting page
   ↓
Related supporting page

Useful linking relationships include:

  • The pillar page links to its most important supporting pages.
  • Every important supporting page links back to the pillar page.
  • Related supporting pages link to one another when the link adds context.
  • Informational pages link to relevant commercial pages.
  • Commercial pages link to useful educational resources where appropriate.
  • Navigation and breadcrumbs reinforce the hierarchy.

Google says internal links help it discover pages and understand their relevance. It also recommends concise, relevant anchor text and says every important page should have a link from at least one other page on the site.

Use Descriptive Anchor Text

Good anchor text includes:

  • technical SEO audit
  • how XML sitemaps work
  • canonical tag implementation
  • crawl budget best practices

Weak anchor text includes:

  • click here
  • read more
  • this article
  • learn more

Anchor text should describe the destination accurately. Do not use the same keyword phrase for every link. Natural variation is clearer for readers and avoids a mechanical linking pattern.

Do Not Link Every Page to Every Other Page

Too many links make navigation harder and weaken the structure.

Add a link when the destination:

  • Explains an important term
  • Provides the next logical step
  • Supports a claim
  • Helps the user complete a task
  • Is commercially relevant to the current page

A content silo should be connected, not isolated. Strictly blocking links between silos can create a poor user experience and hide useful relationships.

7. Use Logical URLs, but Do Not Rely on Folders Alone

A logical URL structure can support the subject hierarchy:

example.com/technical-seo/
example.com/technical-seo/crawl-budget/
example.com/technical-seo/robots-txt/
example.com/technical-seo/xml-sitemaps/

Putting pages in the same URL folder does not create a silo by itself. The content, navigation and internal links must communicate the relationship too.

Google recommends descriptive URLs and logical site organization because they can help users understand where a page fits. Google also notes that search engines can often understand pages without a site reorganization. Do not redesign URLs solely to create a theoretical silo.

If you change existing URLs, manage redirects, update internal links and monitor indexing. A new folder structure may not justify the migration risk.

8. Connect the Silo to Commercial Pages

A content silo should support the customer journey as well as informational traffic.

For example:

Technical SEO Guide
├── Technical SEO Audit
│   └── Technical SEO Audit Service
├── Crawl Budget
├── Robots.txt
└── XML Sitemaps

A page about technical SEO audits can link naturally to a technical SEO audit service. A page about XML sitemaps may link to a technical SEO checklist or audit template.

Do not insert a commercial page into every article without context. Link to it where the reader is likely to need the product, service or next step.

9. Publish in a Deliberate Order

For a new silo, use this order:

  1. Pillar page
  2. Highest-value supporting pages
  3. Commercial or conversion page
  4. Supporting pages for narrower questions
  5. Case studies, templates or original research

Publishing the pillar page first gives later articles a clear destination for internal links. Do not publish a weak pillar page just to create the structure. Build a useful guide and add supporting pages over time.

10. Audit and Improve the Silo

Review the silo after publication with a crawler and Google Search Console.

Check for:

  • Important pages with no internal links
  • Orphan pages
  • Broken internal links
  • Pages with excessive links
  • Duplicate or overlapping topics
  • Pillar pages that do not link to key supporting pages
  • Supporting pages that do not link back to the relevant hub
  • Weak or generic anchor text
  • Pages receiving impressions for the wrong intent
  • Commercial pages with no relevant internal links

Google Search Console can help identify indexing and performance issues. A sitemap can help Google discover URLs, but it does not guarantee indexing or higher rankings. It should support a crawlable internal link structure, not replace one.

Physical Silo Versus Virtual Silo

Physical Silo

A physical silo uses URL folders and site navigation to group pages:

example.com/seo/technical-seo/
example.com/seo/technical-seo/robots-txt/

This can make the hierarchy visible, but it may require URL changes on an established website.

Virtual Silo

A virtual silo uses internal links and contextual relationships without changing the URL structure.

For example:

example.com/robots-txt-guide/

The page can still belong to a technical SEO silo if relevant pages link to it and the site makes its relationship to technical SEO clear.

For most established websites, improving internal links is safer than changing URLs solely to create folders.

Common Content Silo Mistakes

Creating Silos Around Keywords Instead of Topics

A topic such as email marketing can support several related pages. Creating separate pages for minor variations such as "email marketing tips," "email marketing advice" and "email marketing strategies" may create unnecessary overlap.

Making the Silo Too Strict

Users may need to move between related silos. A technical SEO guide may reasonably link to a website migration guide or an ecommerce SEO guide.

Publishing Thin Supporting Pages

A page should exist because it provides a distinct, useful answer. Do not create pages only to add another internal link or target a small keyword variation.

A dropdown menu can expose a page, but a contextual link explains why that page matters at that point in the user journey.

Ignoring Orphan Pages

An important page with no internal links may be difficult for users and crawlers to find. Google recommends ensuring that important pages can be reached through crawlable links.

Treating the Sitemap as the Silo

An XML sitemap lists URLs. It does not explain the topical relationship between those URLs. Internal links, headings, navigation, breadcrumbs and page content provide that context.

A Practical Content Silo Checklist

Before publishing, confirm that:

  • Each silo has one clear main topic.
  • The pillar page matches the main search intent.
  • Each supporting page answers a distinct question.
  • No two pages target the same primary intent.
  • The pillar links to important supporting pages.
  • Supporting pages link back to the pillar.
  • Cross-silo links are used when genuinely relevant.
  • Anchor text describes each destination accurately.
  • Every important page has at least one internal link.
  • URLs are readable and consistent.
  • Commercial pages receive relevant contextual links.
  • Broken, duplicate and orphan pages are reviewed regularly.
  • The sitemap contains the canonical URLs you want Google to discover.
  • Important pages are crawlable and are not accidentally blocked.

The Best Way to Do a Content Silo for SEO

Build a topic-based hierarchy with one strong pillar page, distinct supporting pages and contextual internal links. Keep the structure logical for users, use descriptive anchor text, avoid duplicate pages and connect informational content to relevant commercial pages.

The best silo is not the most rigid one. It is the structure that makes the subject, page relationships and next steps clear to readers and search engines.